Examples with LoadFieldNode org.graalvm.compiler.nodes.java.LoadFieldNode used on opensource projects

Example 11 with LoadFieldNode

use of org.graalvm.compiler.nodes.java.LoadFieldNode in project graal by oracle.

the class PEReadEliminationClosure method processNode.

@Override
protected boolean processNode(Node node, PEReadEliminationBlockState state, GraphEffectList effects, FixedWithNextNode lastFixedNode) {
    if (super.processNode(node, state, effects, lastFixedNode)) {
        return true;
    }
    if (node instanceof LoadFieldNode) {
        return processLoadField((LoadFieldNode) node, state, effects);
    } else if (node instanceof StoreFieldNode) {
        return processStoreField((StoreFieldNode) node, state, effects);
    } else if (node instanceof LoadIndexedNode) {
        return processLoadIndexed((LoadIndexedNode) node, state, effects);
    } else if (node instanceof StoreIndexedNode) {
        return processStoreIndexed((StoreIndexedNode) node, state, effects);
    } else if (node instanceof ArrayLengthNode) {
        return processArrayLength((ArrayLengthNode) node, state, effects);
    } else if (node instanceof UnboxNode) {
        return processUnbox((UnboxNode) node, state, effects);
    } else if (node instanceof RawLoadNode) {
        return processUnsafeLoad((RawLoadNode) node, state, effects);
    } else if (node instanceof RawStoreNode) {
        return processUnsafeStore((RawStoreNode) node, state, effects);
    } else if (node instanceof MemoryCheckpoint.Single) {
        COUNTER_MEMORYCHECKPOINT.increment(node.getDebug());
        LocationIdentity identity = ((MemoryCheckpoint.Single) node).getLocationIdentity();
        processIdentity(state, identity);
    } else if (node instanceof MemoryCheckpoint.Multi) {
        COUNTER_MEMORYCHECKPOINT.increment(node.getDebug());
        for (LocationIdentity identity : ((MemoryCheckpoint.Multi) node).getLocationIdentities()) {
            processIdentity(state, identity);
        }
    }
    return false;
}

Example 12 with LoadFieldNode

use of org.graalvm.compiler.nodes.java.LoadFieldNode in project graal by oracle.

the class IntrinsifyMethodHandlesInvocationPlugin method processInvokeWithMethodHandle.

@SuppressWarnings("try")
private void processInvokeWithMethodHandle(GraphBuilderContext b, BytecodeProvider bytecodeProvider, ResolvedJavaMethod methodHandleMethod, ValueNode[] methodHandleArguments) {
    Plugins graphBuilderPlugins = new Plugins(((ReplacementsImpl) originalProviders.getReplacements()).getGraphBuilderPlugins());
    registerInvocationPlugins(graphBuilderPlugins.getInvocationPlugins(), bytecodeProvider);
    graphBuilderPlugins.prependParameterPlugin(new MethodHandlesParameterPlugin(methodHandleArguments));
    graphBuilderPlugins.clearInlineInvokePlugins();
    graphBuilderPlugins.prependInlineInvokePlugin(new MethodHandlesInlineInvokePlugin());
    graphBuilderPlugins.prependNodePlugin(new MethodHandlePlugin(originalProviders.getConstantReflection().getMethodHandleAccess(), false));
    /* We do all the word type rewriting because parameters to the lambda can be word types. */
    SnippetReflectionProvider originalSnippetReflection = GraalAccess.getOriginalSnippetReflection();
    WordOperationPlugin wordOperationPlugin = new WordOperationPlugin(originalSnippetReflection, new WordTypes(originalProviders.getMetaAccess(), FrameAccess.getWordKind()));
    graphBuilderPlugins.appendInlineInvokePlugin(wordOperationPlugin);
    graphBuilderPlugins.appendTypePlugin(wordOperationPlugin);
    graphBuilderPlugins.appendTypePlugin(new TrustedInterfaceTypePlugin());
    graphBuilderPlugins.appendNodePlugin(wordOperationPlugin);
    GraphBuilderConfiguration graphBuilderConfig = GraphBuilderConfiguration.getSnippetDefault(graphBuilderPlugins);
    GraphBuilderPhase.Instance graphBuilder = new GraphBuilderPhase.Instance(originalProviders.getMetaAccess(), originalProviders.getStampProvider(), originalProviders.getConstantReflection(), originalProviders.getConstantFieldProvider(), graphBuilderConfig, OptimisticOptimizations.NONE, null);
    DebugContext debug = b.getDebug();
    StructuredGraph graph = new StructuredGraph.Builder(b.getOptions(), debug).method(toOriginal(methodHandleMethod)).build();
    try (DebugContext.Scope s = debug.scope("IntrinsifyMethodHandles", graph)) {
        graphBuilder.apply(graph);
        /*
             * We do not care about the improved type information from Pi nodes, so we just delete
             * them to simplify our graph.
             */
        for (PiNode pi : graph.getNodes(PiNode.TYPE)) {
            pi.replaceAndDelete(pi.object());
        }
        /*
             * Support for MethodHandle that adapt the input type to a more generic type, i.e., a
             * MethodHandle that does a dynamic type check on a parameter.
             */
        for (UnaryOpLogicNode node : graph.getNodes().filter(UnaryOpLogicNode.class).filter(v -> v instanceof IsNullNode || v instanceof InstanceOfNode)) {
            ValueNode value = node.getValue();
            if (value instanceof ParameterNode) {
                /*
                     * We just assume that the InstanceOfNode or IsNullNode are used in an If and
                     * the true-successor is actually the branch we want. If that assumption is
                     * wrong, nothing bad happens - we will just continue to report the invocation
                     * as unsupported because the updated stamp for the parameter will not simplify
                     * the graph.
                     */
                if (node instanceof InstanceOfNode) {
                    InstanceOfNode inst = (InstanceOfNode) node;
                    TypeReference typeRef = inst.type();
                    value.setStamp(new ObjectStamp(typeRef.getType(), typeRef.isExact(), !inst.allowsNull(), false));
                } else {
                    assert node instanceof IsNullNode;
                    ResolvedJavaType type = value.stamp(NodeView.DEFAULT).javaType(originalProviders.getMetaAccess());
                    value.setStamp(new ObjectStamp(type, false, /* non-null */
                    true, false));
                }
            }
        }
        /*
             * The canonicalizer converts unsafe field accesses for get/set method handles back to
             * high-level field load and store nodes.
             */
        new CanonicalizerPhase().apply(graph, new PhaseContext(originalProviders));
        for (FixedGuardNode guard : graph.getNodes(FixedGuardNode.TYPE)) {
            if (guard.next() instanceof AccessFieldNode && guard.condition() instanceof IsNullNode && guard.isNegated() && ((IsNullNode) guard.condition()).getValue() == ((AccessFieldNode) guard.next()).object()) {
                /*
                     * Method handles to load and stores fields have null checks. Remove them, since
                     * the null check is implicitly done by the field access.
                     */
                GraphUtil.removeFixedWithUnusedInputs(guard);
            }
        }
        debug.dump(DebugContext.VERY_DETAILED_LEVEL, graph, "Final intrinisfication graph");
        /*
             * After parsing (and recursive inlining during parsing), the graph must contain only
             * one invocation (and therefore only one MethodCallTargetNode), plus the parameters,
             * constants, start, and return nodes.
             */
        Node singleFunctionality = null;
        ReturnNode singleReturn = null;
        for (Node node : graph.getNodes()) {
            if (node == graph.start() || node instanceof ParameterNode || node instanceof ConstantNode || node instanceof FrameState) {
                /* Ignore the allowed framework around the nodes we care about. */
                continue;
            } else if (node instanceof Invoke) {
                /* We check the MethodCallTargetNode, so we can ignore the invoke. */
                continue;
            } else if ((node instanceof MethodCallTargetNode || node instanceof LoadFieldNode || node instanceof StoreFieldNode) && singleFunctionality == null) {
                singleFunctionality = node;
                continue;
            } else if (node instanceof ReturnNode && singleReturn == null) {
                singleReturn = (ReturnNode) node;
                continue;
            }
            throw new UnsupportedFeatureException("Invoke with MethodHandle argument could not be reduced to at most a single call: " + methodHandleMethod.format("%H.%n(%p)"));
        }
        if (singleFunctionality instanceof MethodCallTargetNode) {
            MethodCallTargetNode singleCallTarget = (MethodCallTargetNode) singleFunctionality;
            assert singleReturn.result() == null || singleReturn.result() == singleCallTarget.invoke();
            /*
                 * Replace the originalTarget with the replacementTarget. Note that the
                 * replacementTarget node belongs to a different graph than originalTarget, so we
                 * need to match parameter back to the original graph and allocate a new
                 * MethodCallTargetNode for the original graph.
                 */
            ValueNode[] replacedArguments = new ValueNode[singleCallTarget.arguments().size()];
            for (int i = 0; i < replacedArguments.length; i++) {
                replacedArguments[i] = lookup(b, methodHandleArguments, singleCallTarget.arguments().get(i));
            }
            b.handleReplacedInvoke(singleCallTarget.invokeKind(), lookup(singleCallTarget.targetMethod()), replacedArguments, false);
        } else if (singleFunctionality instanceof LoadFieldNode) {
            LoadFieldNode fieldLoad = (LoadFieldNode) singleFunctionality;
            b.addPush(b.getInvokeReturnType().getJavaKind(), LoadFieldNode.create(null, lookup(b, methodHandleArguments, fieldLoad.object()), lookup(fieldLoad.field())));
        } else if (singleFunctionality instanceof StoreFieldNode) {
            StoreFieldNode fieldStore = (StoreFieldNode) singleFunctionality;
            b.add(new StoreFieldNode(lookup(b, methodHandleArguments, fieldStore.object()), lookup(fieldStore.field()), lookup(b, methodHandleArguments, fieldStore.value())));
        } else if (singleReturn.result() != null) {
            /* Replace the invocation with he constant result. */
            JavaConstant constantResult = singleReturn.result().asJavaConstant();
            assert b.getInvokeReturnType().getJavaKind() == constantResult.getJavaKind();
            b.addPush(constantResult.getJavaKind(), ConstantNode.forConstant(lookup(constantResult), universeProviders.getMetaAccess()));
        } else {
            /* No invoke and no return value, so nothing to do. */
            assert b.getInvokeReturnType().getJavaKind() == JavaKind.Void;
        }
    } catch (Throwable ex) {
        throw debug.handle(ex);
    }
}

Example 13 with LoadFieldNode

use of org.graalvm.compiler.nodes.java.LoadFieldNode in project graal by oracle.

the class MethodTypeFlowBuilder method markFieldsUsedInComparison.

/**
 * If the node corresponding to the compared value is an instance field load then mark that
 * field as being used in a comparison.
 *
 * @param comparedValue the node corresponding to the compared value
 */
private static void markFieldsUsedInComparison(ValueNode comparedValue) {
    if (comparedValue instanceof LoadFieldNode) {
        LoadFieldNode load = (LoadFieldNode) comparedValue;
        AnalysisField field = (AnalysisField) load.field();
        if (!field.isStatic()) {
            field.markAsUsedInComparison();
        }
    }
}

Example 14 with LoadFieldNode

use of org.graalvm.compiler.nodes.java.LoadFieldNode in project graal by oracle.

the class SVMMethodTypeFlowBuilder method checkUnsafeOffset.

@Override
protected void checkUnsafeOffset(ValueNode offsetNode) {
    if (!NativeImageOptions.ThrowUnsafeOffsetErrors.getValue()) {
        /* Skip the checks bellow. */
        return;
    }
    if (offsetNode instanceof LoadFieldNode) {
        LoadFieldNode offsetLoadNode = (LoadFieldNode) offsetNode;
        AnalysisField field = (AnalysisField) offsetLoadNode.field();
        if (!(field.wrapped instanceof ComputedValueField)) {
            UnsafeOffsetError.report("Field " + field + " is used as an offset in an unsafe operation, but no value recomputation found. \n Wrapped field: " + field.wrapped);
        }
    } else if (NativeImageOptions.ReportUnsafeOffsetWarnings.getValue()) {
        String message = "Offset used in an unsafe operation. Cannot determine if the offset value is recomputed.";
        message += "Location: " + offsetNode.getNodeSourcePosition() + "\n";
        message += "Node class: " + offsetNode.getClass().getName() + "\n";
        if (NativeImageOptions.UnsafeOffsetWarningsAreFatal.getValue()) {
            UnsafeOffsetError.report(message);
        } else {
            System.out.println(message);
        }
    }
}

Example 15 with LoadFieldNode

use of org.graalvm.compiler.nodes.java.LoadFieldNode in project graal by oracle.

the class WordOperationPlugin method handleLoadField.

@Override
public boolean handleLoadField(GraphBuilderContext b, ValueNode receiver, ResolvedJavaField field) {
    StampPair wordStamp = interceptType(b, field.getType(), false);
    if (wordStamp != null) {
        LoadFieldNode loadFieldNode = LoadFieldNode.createOverrideStamp(wordStamp, receiver, field);
        b.addPush(field.getJavaKind(), loadFieldNode);
        return true;
    }
    return false;
}